Support was responding to:
I need to remove this product from a PC that I deployed using Kaseya.  The agent has been uninstalled already.  Because the agent is gone, the c:\kworking directory is also gone, and when I initiate an uninstall command, it fails because it needs files in that path.

Support wrote:
Hello Andrew,

If the Kaseya Agent has been removed and the GSM command is no longer functioning as a result, you will need to either remotely connect to that endpoint or move over to it physically to perform the uninstall in Safe Mode.

-- Uninstall on the endpoint in Safe Mode with Networking --

***For instructions on starting in Safe Mode with Networking  <a href="" target="_blank">click here</a>.*** 

1. After Booting into SafeMode with Networking, open the Command Prompt as an admin. 
2. Type in "C:\Program Files\Webroot\WRSA.exe" -uninstall 

***(You may need to adjust the file path if you've changed the install directory)***

3. Enter in the CAPTCHA puzzle. 
4. Reboot into normal Windows mode and test.